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Product type:Oil Country Tubular Goods--Drilling String
 
Name:Kellys
Item:ydaer_1
Description:
       Kellys are made from 4145H modified alloy steel in accordance with API Spec.7-1 latest edition, which are quenched and tempered along full length. A hardness range of 285 to 341 BHN and a minimum impact value of 54 Joules as per ASTM A 370 Charpy-V, these values are guaranteed one inch below the surface. The kelly bars are inspected by an ultrasonic unit over their full length and full section. The wall thickness of each flat of the drive section is verified ultrasonically. All kellys connectons are fitted with pressed steel thread protectors on both ends and each kellys would be shipped with steel scabbard for marine transportation.
 
Specification for Square Kelly

Nom Size
Lengths
Top Upset Joint
Bottom Upset
Bore
Drive Section
Weight
(ft)
Standard
Optional
(kg)
A
B
LH Connection
OD C
LH Connection
OD C
RH Connection
OD D
E
F
G
Standard
Optional
(in)
(in)
(in)
(in)
(in)
(in)
(in)
2 1/2
40
37
6 5/8 Reg
7 3/4
4 1/2 Reg
5 3/4
NC26           (2 3/8 IF)
3 3/8
1 1/4
3 1/4
2 1/2
410
360
46
43
465
420
3
40
37
6 5/8 Reg
7 3/4
4 1/2 Reg
5 3/4
NC31           (2 7/8 IF)
4 1/8
1 3/4
3 7/8
3
495
450
46
43
560
515
3 1/2
40
37
6 5/8 Reg
7 3/4
4 1/2 Reg
5 3/4
NC38           (3 1/2 IF)
4 3/4
2 1/4
4 3/7
3 1/2
600
555
46
43
670
630
54
51
780
730
4 1/4
40
37
6 5/8 Reg
7 3/4
4 1/2 Reg
5 3/4
NC46or NC50
6 or 6 3/8 - 6 1/2
2 4/5
5 1/2
4 1/4
825
780
46
43
940
890
54
51
1070
1040
5 1/4
40
37
6 5/8 Reg
7 3/4
--
--
NC50 or 5 1/2 FH or NC56
7
3 1/4
6 3/4
5 1/4
1250
--
46
43
1430
54
51
1670
6
40
37
6 5/8 Reg
7 3/4
--
--
6 5/8 FH
8
3 1/2
7 5/8
6
1670
--
46
43
1920
54
51
2250

 
Specification for Hex kellys

Nom Size
Lengths
Top Upset Joint
Bottom Upset
Bore
Drive Section
Weight
(ft)
Standard
Optional
(kg)
A
B
LH Connection
OD C
LH Connection
OD C
RH Connection
OD D
E
F
G
Standard
Optional
(in)
(in)
(in)
(in)
(in)
(in)
(in)
3
40
37
6 5/8 Reg
7 3/4
4 1/2 Reg
5 3/4
NC26           (2 3/8 IF)
3 3/8
1 1/4
3.375
3
450
400
46
43
500
555
3 1/2
40
37
6 5/8 Reg
7 3/4
4 1/2 Reg
5 3/4
NC31           (2 7/8 IF)
4 1/8
1 3/4
3.937
3 1/2
580
535
46
43
670
620
54
51
780
730
4 1/4
40
37
6 5/8 Reg
7 3/4
4 1/2 Reg
5 3/4
NC38           (3 1/2 IF)
4 3/4
2 1/4
4.781
4 1/4
750
700
46
43
840
800
54
51
980
940
5 1/4
40
37
6 5/8 Reg
7 3/4
--
--
NC46or NC50
6or6 3/8-6 1/2
2 13/16 or 3 1/4
5.9
5 1/4
1020
--
46
43
1170
54
51
1350
6
40
37
6 5/8 Reg
7 3/4
--
--
NC50 or 5 1/2 FH or NC56
7
3 1/2
6.812
6
1320
--
46
43
1500
54
51
1770

 
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